Watch: NFL's high-profile rookies shine in preseason debuts

Cleveland Browns quarterback Baker Mayfield and New York Giants running back Saquon Barkley were impressive in their preseason debuts Thursday. Baltimore Ravens quarterback Lamar Jackson also displayed the unique talent that has the Ravens drawing up specific plays for him.

There were plenty of surprises, arched eyebrows and private questions after the Cleveland Browns used the No. 1 pick to select quarterback Baker Mayfield in the 2018 NFL draft. Critics said he was too short, too volatile with his attitude and too much of a gambler on the field.

Mayfield might have started to change the opinions of some critics during his preseason debut Thursday night. The rookie looked poised and polished during the game against the New York Giants - a 20-10 win.

Mayfield, who came on for the Browns third offensive series, looked very good after a three-and-out on his opening series. He climbed up the pocket to buy time before finding wide receiver C.J. Board for an 18-yard gain on third-and-16. He also scrambled to gain a first downs on third-and-6 and fourth-and-2 plays, respectively. Mayfield completed the drive with a poised and smooth 10-yard touchdown pass to tight end David Njoku.